Answer
$y=-2x+2$
See graph.
Work Step by Step
Step 1. Use the given two points for the slope $m=\frac{-2-4}{2+1}=-2$
Step 2. Use point $(-1,4)$, we have $y-4=-2(x+1)$ or $y=-2x+2$
Step 3. See graph.
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